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SE9101397D0 - PROCEDURE AND DEVICE TO TRANSFER AN OPTICAL DATA SIGNAL FROM A MULTIMOD FIBER TO A SIMILAR SIGNAL INTO A SINGLE MODIFIER - Google Patents

PROCEDURE AND DEVICE TO TRANSFER AN OPTICAL DATA SIGNAL FROM A MULTIMOD FIBER TO A SIMILAR SIGNAL INTO A SINGLE MODIFIER

Info

Publication number
SE9101397D0
SE9101397D0 SE9101397A SE9101397A SE9101397D0 SE 9101397 D0 SE9101397 D0 SE 9101397D0 SE 9101397 A SE9101397 A SE 9101397A SE 9101397 A SE9101397 A SE 9101397A SE 9101397 D0 SE9101397 D0 SE 9101397D0
Authority
SE
Sweden
Prior art keywords
laser
signal
pct
pass filter
stored
Prior art date
Application number
SE9101397A
Other languages
Swedish (sv)
Other versions
SE467762B (en
SE9101397L (en
Inventor
G S Forsberg
Original Assignee
Fogim Handelsbolag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fogim Handelsbolag filed Critical Fogim Handelsbolag
Priority to SE9101397A priority Critical patent/SE9101397L/en
Publication of SE9101397D0 publication Critical patent/SE9101397D0/en
Priority to US08/137,162 priority patent/US5444563A/en
Priority to PCT/SE1992/000285 priority patent/WO1992020172A1/en
Priority to DE69226635T priority patent/DE69226635T2/en
Priority to EP92909506A priority patent/EP0583304B1/en
Priority to AU17564/92A priority patent/AU1756492A/en
Publication of SE467762B publication Critical patent/SE467762B/en
Publication of SE9101397L publication Critical patent/SE9101397L/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60Receivers
    • H04B10/66Non-coherent receivers, e.g. using direct detection
    • H04B10/67Optical arrangements in the receiver
    • H04B10/671Optical arrangements in the receiver for controlling the input optical signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50Transmitters
    • H04B10/501Structural aspects
    • H04B10/503Laser transmitters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

PCT No. PCT/SE92/00285 Sec. 371 Date Oct. 28, 1993 Sec. 102(e) Date Oct. 28, 1993 PCT Filed Apr. 29, 1992 PCT Pub. No. WO92/20172 PCT Pub. Date Nov. 12, 1992.The present invention discloses a method and a device for conversion of an optical data signal from a multimode fibre (1), which except for normal data signals may contain interruptions and an overmodulated low frequency signal, to a corresponding signal which is transmitted further into a single mode fibre (8) by a laser (7). An electric signal from an optical receiver (2) partly directly and partly through a low pass filter (4) is coupled to a comparator (5) the output of which modulates the laser (7). Upon detection of an optical interruption the low pass filter (4) is influenced such that its output signal is stored in a memory device, and the laser is influenced by diversion of the laser current, simultaneously as an analogue value in the control loop of the laser is stored. When the interruption ends both the laser transmitter (7) and the low pass filter (4) continue to operate as before on the basis of their stored analogue values.
SE9101397A 1991-05-08 1991-05-08 PROCEDURE AND DEVICE TO TRANSFER AN OPTICAL DATA SIGNAL FROM A MULTIMOD FIBER TO A SIMILAR SIGNAL INTO A SINGLE MODIFIER SE9101397L (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9101397A SE9101397L (en) 1991-05-08 1991-05-08 PROCEDURE AND DEVICE TO TRANSFER AN OPTICAL DATA SIGNAL FROM A MULTIMOD FIBER TO A SIMILAR SIGNAL INTO A SINGLE MODIFIER
US08/137,162 US5444563A (en) 1991-05-08 1992-04-29 Method and arrangement to convert an optical data signal from a multi mode fibre to a corresponding signal into a signal mode fibre
PCT/SE1992/000285 WO1992020172A1 (en) 1991-05-08 1992-04-29 Method and arrangement to convert an optical data signal from a multimode fibre to a corresponding signal into a signal mode fibre
DE69226635T DE69226635T2 (en) 1991-05-08 1992-04-29 METHOD AND DEVICE FOR CONVERTING AN OPTICAL DATA SIGNAL FROM A MULTIMODE FIBER TO A CORRESPONDING SIGNAL IN A MONOMODE FIBER
EP92909506A EP0583304B1 (en) 1991-05-08 1992-04-29 Method and arrangement to convert an optical data signal from a multimode fibre to a corresponding signal into a single mode fibre
AU17564/92A AU1756492A (en) 1991-05-08 1992-04-29 Method and arrangement to convert an optical data signal from a multimode fibre to a corresponding signal into a signal mode fibre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9101397A SE9101397L (en) 1991-05-08 1991-05-08 PROCEDURE AND DEVICE TO TRANSFER AN OPTICAL DATA SIGNAL FROM A MULTIMOD FIBER TO A SIMILAR SIGNAL INTO A SINGLE MODIFIER

Publications (3)

Publication Number Publication Date
SE9101397D0 true SE9101397D0 (en) 1991-05-08
SE467762B SE467762B (en) 1992-09-07
SE9101397L SE9101397L (en) 1992-09-07

Family

ID=20382682

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9101397A SE9101397L (en) 1991-05-08 1991-05-08 PROCEDURE AND DEVICE TO TRANSFER AN OPTICAL DATA SIGNAL FROM A MULTIMOD FIBER TO A SIMILAR SIGNAL INTO A SINGLE MODIFIER

Country Status (6)

Country Link
US (1) US5444563A (en)
EP (1) EP0583304B1 (en)
AU (1) AU1756492A (en)
DE (1) DE69226635T2 (en)
SE (1) SE9101397L (en)
WO (1) WO1992020172A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3092521B2 (en) * 1996-08-26 2000-09-25 日本電気株式会社 Communication network node device, optical communication network node device, signal monitoring method, and communication network
US10439733B2 (en) * 2014-01-13 2019-10-08 The Johns Hopkins University Fiber optic circuit breaker
CN110943781B (en) * 2019-11-27 2023-05-16 深圳市联洲国际技术有限公司 Mode conversion equipment of single mode optical fiber and multimode optical fiber

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4257125A (en) * 1979-05-01 1981-03-17 The Singer Company Receiver for unipolar Manchester fiber optics signals
GB8429921D0 (en) * 1984-11-27 1985-01-03 British Telecomm Flexible regenerator
JPH07112173B2 (en) * 1986-08-26 1995-11-29 日本電気株式会社 Light modulation circuit
JPH0834454B2 (en) * 1990-03-01 1996-03-29 国際電信電話株式会社 Optical repeater monitoring system

Also Published As

Publication number Publication date
SE467762B (en) 1992-09-07
WO1992020172A1 (en) 1992-11-12
AU1756492A (en) 1992-12-21
SE9101397L (en) 1992-09-07
EP0583304B1 (en) 1998-08-12
DE69226635T2 (en) 1999-04-08
EP0583304A1 (en) 1994-02-23
DE69226635D1 (en) 1998-09-17
US5444563A (en) 1995-08-22

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